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@uitrit tartes getwi- @fitta HERMAN C. WEIHE, OF PHILADELPHIA,PENNSYLVANIA.

Letters Patent No. 78,627, dated June 2, 1868,

IMPROVEMENT IN COUNTER-SHAFTING.

`TO ALL WHOM IT MAY-CONCERN:

Be it known that I, HERMAN G. WEIHE, of the city of Philadelphia, andState of Pennsylvania, have invented Improvements in Connter-Shafting;and I do hereby declare that the following isa full, clear, and i exactdescription of the same, reference being had to the accompanying sheetsof drawings, `and to the letters of reference marked thereon. p

My improvements consist of such mechanism as is hereinafter shown anddescribed, whereby the back travel of the slide-rest of a screw-cuttinglathe, or other slide-lathe, is acceleratcchvwithout any'additionallathe-mechanism.

On reference to the accompanying sheets of drawings, making parts ofthis specification- Sheet l exhibits a plan view of myinvention, and

Sheet 2 an end elevation of the same.

Similar letters refer to similar parts in the two views.

A is a main line of shafting; BB' are counter-shaft-ing. A. pulley, C,on the shaftingA, is belted to the pulley D on the counter-shaft B. E isa loose cone-pulley on the shaft B. F is a loose pulley on the samecounter-shaft, and is belted to a pulley, G, on the counter-shaft lB. IIis a shifting-wheel, which gears into the pinion I on the shaft B, fixedto the cone-pulley E. a is' a sliding feather on the shaft B. takes,respect ively, into the corresponding notches in the hubs oi' thepulleys E and F, according to the direction which it I is shifted by theshifting-lever K, which takes over the collar, I, of the feather; c'is afeather on the shaft B',

i" 4 by which the wheel H has a rotating motion from its shaft, and asliding motion from the shifting-lever d; As shown in the accompanyingsheets ot' drawings, the motion imparted. to the pulley D by the pulleyC is imparted to the cene-pulley E through t-he medium of the wheel andpinion H and I, for the feather a takes into the hub of the loose pulleyF, causing it to rotate with the shaft B, which motion is by beltingimparted to the shaft B', which carries the wheel H, the cone-pulley Ebeing belted to the cone-pulley L of the lathe, which in turn isconnected by suitable gearing to the feed-screw of the slide-lathe.

It will be readily seen that the speed at which the slide-rest isretreated for arepetition of the'cut, depends on the-relative diametersof the wheel H and thepinion I.

When the slide-lathe has reached the beginning of the cut, theshifting-lever K is thrown forward, which uncouples the feather a andthe pulley F, .and couples it with the loose cone-pulley E. Theshifting-lever d is also made to disengage the wheels II and I, and onthe lathe being started, the feed-screw carries the slide-rest forward,and so on until the work is completed.

What I elnim as my invention, and desire to secure by Letters Iatent, is

1. The parallel counter-shutting B B', sliding spur-wheel H, xed pinionI, and the loose cone-pulley E, when combined and arranged substantiallyas shown and described.

P 2. 'Ihe parallel counter-shafting B B', fixed pulley G, loose pulleyF, sliding feather a., collar shiftinglever K, and the loose cone-pulleyE, when combined and arranged substantially as shown and described.

3. The parallel counter-shafting B B', loose pulley F, fixed pulley G,sliding feather a, loose cone-pulley E, feather c, sliding gear H, andthe pinion I, when combined and arranged substantially as shown anddescribed.

4. The main shaft-.ing A, parallel counter-shafting B B', pulley C,pulley D, loose conc-pulley E, feather a, loose pulley F, and the fixedpulley G, when combined and arranged as herein'shown and described.

In testimony whereof, I hereunto sien mv name to this specification inpresence of two subscribing witnesses.

` Y HERMAN C. WEII-IE.

Witnesses;

FRANCIS D. PAsToRIoUs, W. W. DOUGHERTY.

